content: /*
   * The author disclaims copyright to this source code. In place of
   * a legal notice, here is a blessing:
   *
   * May you do good and not evil.
   * May you find forgiveness for yourself and forgive others.
   * May you share freely, never taking more than you give.
   *
   */
  // via https://gist.github.com/virasak/54436
  
  package net.socialgamer.cah.hibernate;
  
  import java.sql.Types;
  
  import org.hibernate.dialect.Dialect;
  import org.hibernate.dialect.function.SQLFunctionTemplate;
  import org.hibernate.dialect.function.StandardSQLFunction;
  import org.hibernate.dialect.function.VarArgsSQLFunction;
  import org.hibernate.type.StandardBasicTypes;
  
  
  public class SqliteDialect extends Dialect {
    public SqliteDialect() {
      super();
      registerColumnType(Types.BIT, "integer");
      registerColumnType(Types.TINYINT, "tinyint");
      registerColumnType(Types.SMALLINT, "smallint");
      registerColumnType(Types.INTEGER, "integer");
      registerColumnType(Types.BIGINT, "bigint");
      registerColumnType(Types.FLOAT, "float");
      registerColumnType(Types.REAL, "real");
      registerColumnType(Types.DOUBLE, "double");
      registerColumnType(Types.NUMERIC, "numeric");
      registerColumnType(Types.DECIMAL, "decimal");
      registerColumnType(Types.CHAR, "char");
      registerColumnType(Types.VARCHAR, "varchar");
      registerColumnType(Types.LONGVARCHAR, "longvarchar");
      registerColumnType(Types.DATE, "date");
      registerColumnType(Types.TIME, "time");
      registerColumnType(Types.TIMESTAMP, "timestamp");
      registerColumnType(Types.BINARY, "blob");
      registerColumnType(Types.VARBINARY, "blob");
      registerColumnType(Types.LONGVARBINARY, "blob");
      // registerColumnType(Types.NULL, "null");
      registerColumnType(Types.BLOB, "blob");
      registerColumnType(Types.CLOB, "clob");
      registerColumnType(Types.BOOLEAN, "integer");
  
      registerFunction("concat", new VarArgsSQLFunction(StandardBasicTypes.STRING, "", "||", ""));
      registerFunction("mod", new SQLFunctionTemplate(StandardBasicTypes.INTEGER, "?1 % ?2"));
      registerFunction("substr", new StandardSQLFunction("substr", StandardBasicTypes.STRING));
      registerFunction("substring", new StandardSQLFunction("substr", StandardBasicTypes.STRING));
    }
  
    @Override
    public boolean supportsIdentityColumns() {
      return true;
    }
  
    /*
     * public boolean supportsInsertSelectIdentity() {
     * return true; // As specify in NHibernate dialect
     * }
     */
  
    @Override
    public boolean hasDataTypeInIdentityColumn() {
      return false; // As specify in NHibernate dialect
    }
  
    /*
     * public String appendIdentitySelectToInsert(String insertString) {
     * return new StringBuffer(insertString.length()+30). // As specify in NHibernate dialect
     * append(insertString).
     * append("; ").append(getIdentitySelectString()).
     * toString();
     * }
     */
  
    @Override
    public String getIdentityColumnString() {
      // return "integer primary key autoincrement";
      return "integer";
    }
  
    @Override
    public String getIdentitySelectString() {
      return "select last_insert_rowid()";
    }
  
    @Override
    public boolean supportsLimit() {
      return true;
    }
  
    @Override
    public String getLimitString(final String query, final boolean hasOffset) {
      return new StringBuffer(query.length() + 20).append(query)
          .append(hasOffset ? " limit ? offset ?" : " limit ?").toString();
    }
  
    @Override
    public boolean supportsTemporaryTables() {
      return true;
    }
  
    @Override
    public String getCreateTemporaryTableString() {
      return "create temporary table if not exists";
    }
  
    @Override
    public boolean dropTemporaryTableAfterUse() {
      return false;
    }
  
    @Override
    public boolean supportsCurrentTimestampSelection() {
      return true;
    }
  
    @Override
    public boolean isCurrentTimestampSelectStringCallable() {
      return false;
    }
  
    @Override
    public String getCurrentTimestampSelectString() {
      return "select current_timestamp";
    }
  
    @Override
    public boolean supportsUnionAll() {
      return true;
    }
  
    @Override
    public boolean hasAlterTable() {
      return false; // As specify in NHibernate dialect
    }
  
    @Override
    public boolean dropConstraints() {
      return false;
    }
  
    @Override
    public String getAddColumnString() {
      return "add column";
    }
  
    @Override
    public String getForUpdateString() {
      return "";
    }
  
    @Override
    public boolean supportsOuterJoinForUpdate() {
      return false;
    }
  
    @Override
    public String getDropForeignKeyString() {
      throw new UnsupportedOperationException(
          "No drop foreign key syntax supported by SQLiteDialect");
    }
  
    @Override
    public String getAddForeignKeyConstraintString(final String constraintName,
        final String[] foreignKey,
        final String referencedTable, final String[] primaryKey,
        final boolean referencesPrimaryKey) {
      throw new UnsupportedOperationException(
          "No add foreign key syntax supported by SQLiteDialect");
    }
  
    @Override
    public String getAddPrimaryKeyConstraintString(final String constraintName) {
      throw new UnsupportedOperationException(
          "No add primary key syntax supported by SQLiteDialect");
    }
  
    @Override
    public boolean supportsIfExistsBeforeTableName() {
      return true;
    }
  
  @Override
    public boolean supportsCascadeDelete() {
      return false;
    }
  }
  